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Mechanical Movement.
Patent for improved manner of rotary movement on various machines. Includes illustrations.
Date:
December 16, 1902
Creator:
Gibson, Levi D.
System:
The Portal to Texas History
Power Transmission.
Patent for a power transmission that has a gear that can provide different speeds. This transmission is a simple construction that allows for the driver to easily choose the gear, which allows high efficiency in operation.
Date:
September 16, 1919
Creator:
Cook, William A.
System:
The Portal to Texas History